(共24张PPT)
7的认识
De ren shi
7
2
1
3
4
5
6
7
7
6 7
<
7 6
>
1
6
7个 分成两堆，有几种分法？
2
5
3
4
7
4 3
7
2 5
7
3 4
7个 分成两堆，有几种分法？
7
6 1
7
1 6
7
5 2
6
+1
=7
+6
1
=7
7
– 6
=1
7
– 1
=6
5
+2
=7
7
– 2
=5
2
+ 5 =
7
– 5
=
2
7
4
+ 3 =
3
+ =
7
–3 =
7
4
7
– =
7
3
4
4
7
– 6
=1
7
– 1
=6
7
– 2
=5
7
– 5
=
2
7
–3 =
4
– =
7
3
4
6
+1
=7
+6
1
=7
5
+2
=7
2
+ 5 =
7
4
+ 3 =
3
+ =
7
7
4
只
4
=
+
3
7
=
7
-
2
5
1
7
2
5
=
+
2
=
5
+
7
7
2
=
-
4
7
=
-
3
4
7
3
6
=
+
1
7
7
=
-
4
3
只
3+4= 7-1= 7-3=
7-2= 6+1= 7-6=
5+2= 7+0= 7-5=
7
6
4
5
7
1
7
7
2
有7只小兔，每只小兔要喂
1个萝卜，还缺2个萝卜，现
在有几个萝卜？
